液压传动

The proportional technique of the electrohydraulic and the numeric control technique of the electrohydraulic fill up the blank between the technique of the switch-control and servo-control. It is an important branch in the fluid drive and in the control technique.

电液比例技术和电液数字控制技术填补了传统开关式液压控制技术与伺服控制之间的空白，已成为流体传动与控制技术中最富生命力的一个分支。

This thesis mainly researches on following aspects: the structure , the working principle and the whole device parametrical model of soft start device for belt conveyer ; mechanism movement simulation; and properties of hydraulic-viscous friction drive . It also designs the hydraulic control systems and electrical control systems.

本文重点研究了带式输送机软启动装置的结构、工作原理、整机的参数化建模、机构运动仿真以及液粘摩擦传动的特性，设计了该装置的液压和电气控制系统。

The present paper design content is the expandable belt feeding engine, is transmits the force of traction through between the transmission drum and adhesive tape's friction force, concurrently makes the hauling organization and the load bearing organization one kind by the adhesive tape for the material equipment, expands and contracts the arm rear part establishment to have the expandable hydraulic prop, causes the complete machine length nimble elongation or the reduction, between the supporting roller the included angle increases to causes the belt fastener inclination angle to be possible to amount to 25 degrees, has for estimates in a big way, the transportation is steady, the service is convenient, the area slightly and so on characteristics, brings conveniently to the load, can the widespread application in each kind of bulk collection and distribution center production scene.

本论文设计内容是可伸缩带式给料机，是通过传动滚筒与胶带之间的摩擦力来传递牵引力，以胶带兼作牵引机构和承载机构的一种给料设备，伸缩臂尾部设置有可伸缩的液压支柱，使整机长度灵活的伸长或缩短，托辊之间夹角增大可使皮带机倾角可达到25度，具有给料量大，运输平稳，维修方便，可多点卸料，占地面积小等特点，给装车带来方便，能广泛的应用于各种散料集散地的生产现场。

The present paper design content is the expandable belt feedingengine, is transmits the force of traction through between thetransmission drum and adhesive tape's friction force, concurrentlymakes the hauling organization and the load bearing organizationone kind by the adhesive tape for the material equipment, expandsand contracts the arm rear part establishment to have theexpandable hydraulic prop, causes the complete machine lengthnimble elongation or the reduction, between the supporting rollerthe included angle increases to causes the belt fastenerinclination angle to be possible to amount to 25 degrees, has forestimates in a big way, the transportation is steady, the serviceis convenient, the area slightly and so on characteristics, bringsconveniently to the load, can the widespread application in eachkind of bulk collection and distribution center productionscene.

本论文设计内容是可伸缩带式给料机，是通过传动滚筒与胶带之间的摩擦力来传递牵引力，以胶带兼作牵引机构和承载机构的一种给料设备，伸缩臂尾部设置有可伸缩的液压支柱，使整机长度灵活的伸长或缩短，托辊之间夹角增大可使皮带机倾角可达到25度，具有给料量大，运输平稳，维修方便，可多点卸料，占地面积小等特点，给装车带来方便，能广泛的应用于各种散料集散地的生产现场。

Water hydraulics technology is one of the top research aspects in fluid power transmission and control.

纯水液压技术是当前流体传动及控制领域的学科前沿研究方向之一。

Domestic large enterprises have built a first-class Technology Center is a national model CAD application engineering units, equipped with scientific and technical information, standards, structure, hydraulic, transmission, electrical and many other professional researchers, with senior professional titles 33 personnel, intermediate professional 404 titles of staff and a number of national patent technology, QY300, QY130H truck crane, QUY200 crawler crane on behalf of the domestic large-tonnage mobile crane the most cutting-edge technology research and development capacity and production levels, filled a number of national mobile crane technology gaps ; have a plate pre-processing, CNC plasma cutting, pentahedral processing center, the Russian landing boring, welding robot and so on more than 2000 sets of equipment, excellent manufacturing processing capacity, improve, reaching the advanced international level; has passed ISO9000 Quality Certification Center of China Quality system certification, access to American FMRC Company Registration Certificate of ISO9001, the leading product of three varieties of four won the national silver, truck crane for 15 years, was named the "National Customer Satisfaction Product", in which truck crane QY16 was the "National Consumer Trustworthy Gold China-made cars,"with the industry's only"°"products.

建有国内大型企业一流的技术中心，是国家CAD应用工程示范单位，设有科技信息、标准、结构、液压、传动、电气等多项专业研究，拥有高级专业技术职称人员33名、中级专业技术职称人员404名及多项国家专利技术，QY300、QY130H汽车起重机、QUY200履带吊代表了国内大吨位移动式起重机最前沿的技术研发能力和生产制造水平，填补了国家移动式起重机多项技术空白；拥有板材预处理、数控等离子切割、五面体加工中心、俄罗斯落地镗、焊接机器人等2000多台套设备，制造加工能力优良、完善，达到国际先进水平；已通过中国质量认证中心ISO9000质量体系认证，获得美国FMRC公司ISO9001注册资格证书，主导产品三个品种四次荣获国家银质奖，汽车起重机连续15年被评为"全国用户满意产品"，其中QY16汽车起重机获"全国消费者信得过国产车金奖"，为同行业唯一"金榜题名"产品。

Ash removal mechanism : ash is removed by hydraulic ratchet wheel and detent from both sides. A self-designed plough-type tool is adopted, which is featured as steady drive and smooth ash removal. Our plough-type tool has been used in many types of domestic and imported coal gasifiers and is well received.

清灰机构：采用棘轮、棘爪、液压双侧除灰，大灰刀采用自行设计的犁式除灰刀，传动平稳可靠、除灰顺畅，我公司犁式除灰刀先后在多种国产及进口发生炉上使用，深受用户好评。

Steel works equipment ; Slag tank truck ; Driving system ; Hydraulic system ; Brake system

钢厂设备；渣罐运输车；传动系统；液压系统；制动系统

The second trend is continuate innovating of structure, material, processing technique, working accuracy and product quality. Both equipment reliability and viability increasingly high,and equipment weight increasingly lightness. Hydraulic dynamical bearings and static force bearings are widely applied in large-scale equipment, which bring mill smoother start-up and transmission than other bearings do. Fueling injection fittings are used to lubricate gears, which prolong gears' working lives.

近年来磨机发展的第一个趋势不再是磨机结构的大型化，而是从降低能耗和钢耗的角度来改善磨机工作性能；第二个趋势是不断改进结构，提高材质，完善加工工艺、加工精度、产品质量，设备的可靠性和耐久性越来越高，设备重量越来越轻，在大型设备中普遍采用液压式动力和静力轴承，使磨机的启动和传动更加平稳，齿轮润滑使用喷油装置，延长了齿轮的工作寿命。

Cycloidal pump has been applied in hydraulic system widely because of its many advantages.

0引言摆线齿轮泵是一种输送流体的内啮合齿轮泵，它具有体积小、流量大、结构紧凑、啮合重叠系数大、传动平稳等特点，在液压系统中广泛应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。